Description
The ESP8266 single-channel relay development board is equipped with an ESP-1 2F WIFI module, all I/O ports are exported, and supports various power supply methods such as AC90-250V/DC7-12V/USB 5V. Suitable for ESP8266 secondary development and learning, smart home wireless control and other occasions.
1. Onboard mature and stable ESP-12F Wifi module, large capacity 4M Byte Flash
2. The I/O port and UART program download port of the WiFi module are all led out, which is convenient for secondary development
3. Onboard AC-DC power supply module, power supply mode supports AC90-250V/DC7-1 2V/USB5V
4. Onboard WiFi module RST reset button
5. ESP-12F supports the use of development tools such as Eclipse
6. Onboard 1 5V relay, output switch signal, suitable for controlling the working voltage
Load within AC 250V/DC 30V
7. Onboard power indicator, programmable LED and relay indicator
1.L, N: AC90-250V power supply2.AC90-250V to DC5V switching power supply (when using AC power supply, please don't touch it directly with your hands!!)3.VCC, GND: DC7-12V power supply;4.Micro USB: DC5V USB power supply;Note: AC90-250V, DC7-12V, DC5V USB can choose one of three power supply modes.5.6X6mm button: ESP8266 reset button;6. UART program download port: ESP8266's GND, RX, Tx, 5V are respectively connected to the external TL serial port module's GND, TX, RX, 5V, 100 must be connected to GND when downloading, and then disconnect the I00 and GND after the download is completeconnection;7. GPIO pin header leads to the port;8. Relay output:Normally closed, the relay is short-connected with COM before the pull-in, and hangs in the air after pull-in;COM: public end;NO: Normally open end, the relay is suspended before being closed, and shorted to COM after being closed.9. Power indicator LED;10. Programmable LED;11. Relay indicator LED: lights up when it is closed.
GPIO lead port introduction:
1. GND: power ground
2. Relay: Relay drive port, IO5 drive is used by default. If you want to use other IO to drive the relay, you can remove R14 and then connect the I/O of the drive relay to this Relay pin
3.IO2: GPIO2: UARTI-TXD
4.IO4: GPIO4
5.RX: UARTO-RXD: GPIO3
6.3V3: 3.3V power supply
7. SCLK: clock
8.IO15: GPIO15: MTDO; HSPICS; UARTO-RTS
9.IO0: GPIO0
10.IO5: GPIO5
11.TX: UARTO-TXD; GPIO1
12.5V: 5V power supply
13.IO10: GPIO10
14.MISO: Slave output and host input
15.IO13: GPIO13; HSPI-MOSI; UARTO-CTS
16.1IO14: GPIO14; HSPI-CLK
17. ADC: A/D conversion result. Input voltage range: 0~1V, value range: 0~1024
18.3V3: 3.3V power supply
19.MOSI: Host output and slave input
20.IO9: GPIO9
21. CSO: Chip selection
22.IO12: GPIO12; HSPI-MISO
23.IO16: GPIO16
24.GND: power ground
Specification
Model Number : ESP8266 1 4 Way
Operating Temperature : international standard
Dissipation Power : 90-250V/DC 7-30V
Supply Voltage : 90-250V/DC 7-30V
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